'Find the remainder when `(257^(166)-243^(166))`is divided by 500.'

"Find the remainder when `(257^(166)-243^(166))`
is divided by 500."
'Find the remainder when `(257^(166)-243^(166))`is divided by 500.'
'Find the remainder when `(257^(166)-243^(166))`is divided by 500.'
'Find the remainder when `(257^(166)-243^(166))`is divided by 500.'

500."